23 2 CLOUDS AND FOG Clouds Small water
- Slides: 18
23 -2 CLOUDS AND FOG
Clouds �Small water droplets or ice crystals that fall through air �Fog is a cloud that forms near the surface
Formation �Solid surface are needed for water vapor to condense on �Troposphere – lower layer of atmosphere �Ice, salt, dust – remain suspended in the air for a long time
�Condensation nuclei – particles for water vapor to condense on �Water droplets form �Cooling air causes the condensation
Adiabatic Cooling �Temperature of an air mass decreases as the air mass rises and expands
Mixing �Moist air mixes with another body of moist air with different temperatures
Lifting �Sloping terrain forces air up �Rising air expands and cools
Advective Cooling �Temperature of an air mass decreases as it moves over a cold surface
Classifications of Clouds �Shape and altitude
Cloud Types � 3 Main Cloud Types (Based on Appearance) Cirrus - Wispy, Feather-like clouds Cumulus – Fluffy, Cotton ball-like clouds Stratus – Layered, Sheet-like clouds
Stratus �Gray �Flat, uniform base �Low altitudes
Cumulus �Top – cotton ball �Bottom – dark �Low level �Billowy
Cirrus �Feathery �Ice crystals �High altitude
Cloud Types �Cloud Prefixes - Determines Cloud Subtypes Cirro – High Elevation Alto – Medium Elevation Strato – Layered Nimbo – Rain � Ex: An altocumulus cloud is a medium elevation cumulus cloud
Rain Clouds �Cumulonimbus – Large, anvil-shaped storm clouds associated with storms and hail �Nimbostratus – Dark, layered rain clouds
Fog �Water vapor that has condensed by Earth’s surface
Radiation Fog �Nightly �Layer of air in contact with ground cools below dew point �Results from loss of heat due to radiation
- Water and water and water water
- Advection fog vs radiation fog
- Fog is a type of this cloud
- Advection fog vs radiation fog
- Clouds fog or dew will always form when
- Difference between fog and dew
- Cat and fog
- Small scale purification of water
- Dock water
- I-fog svets
- Optical density of gross fog
- Personification of fog
- Agner fog vcl
- Cegui tutorial
- To help others see you during heavy rain, use your *
- In the fog by milton geiger
- When your headlights shine into fog, *
- Handling and storage artifacts
- How fog is formed